𝔖 Bobbio Scriptorium
✦   LIBER   ✦

An eddy viscosity model for friction in gas—solids flow

✍ Scribed by F. M. Julian; A. E. Dukler

Publisher
American Institute of Chemical Engineers
Year
1965
Tongue
English
Weight
645 KB
Volume
11
Category
Article
ISSN
0001-1541

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✦ Synopsis

The equations normally used t o predict velocity distribution and eddy viscosity in singlephase flow systems can be adapted to fit gas-solids flow systems by including a term to account for the quantity of solid matter carried by the gas stream. This solids loading is expressed as pounds of solid per pound of gas. These modified equations can then be used t o calculate the pressure drop of a solids-laden gas stream flowing in a pipe by means of a two-phase friction factor. Comparison of this approach with available pressure drop data is used to check its validity and to evaluate the constants in the equations.

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In this paper, a homogeneous model including the metastable liquid and metastable two-phase region is presented to assess the effects of various friction factor equations and two-phase viscosity correlations on simulating the behaviour of capillary tubes. Both straight and coiled capillary tubes are